PsExec is not included in Windows by default and must be downloaded as part of the Sysinternals Suite PsExec - Sysinternals - Microsoft Learn

If this returns the Windows version, PsExec 1.98 is correctly installed.

While the operational reasons for wanting PsExec 1.98 are understandable, doing so poses significant security risks. Cybersecurity has evolved drastically since the release of version 1.98.